<html>
<body>
<table height="100%" cellspacing="0" cellpadding="0" border="1">
<tr>
<td>Table cell without height restriction</td>
</tr><tr>
<td valign="middle" height=5 border=1>
This table cell should be 5 pixels high
</td>
</tr>
</table>
</body>
</html>

